September 2018 1 38 Report

rozwiąż równania kwadratowe

a)3x^{2}-7x+2=0

b)-3x^{2}+1,5x+54=0

c)-x^{2}+10x-25=0

d)2x^{2}-x+1=0

e)-x^{2}-x=0

f)\frac{1}{2}x^{2}+\frac{3}{4}x=0

g)-2x^{2}+18=0

h)2x^{2}-4=0

i)x^{2}-9x+20=0


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